.not-found {
    height: 100%;
    background-color: #f0f2f5;
    .left {
        height: 100%;
        background: url("./images/404.png") no-repeat center;
    }
    .right {
        margin-top: 150px;
        padding-left: 50px;
    }
    h1 {
        font-size: 35px;
    }
    h2 {
        margin-bottom: 20px;
        font-size: 20px;
    }
}